The transparency of the key adhesive is directly related to the transparency of the white carbon black, and the white carbon black can be selected with better transparency.

In terms of formula and process, the transparency of the glue is not good. To be clear, the hydroxyl treatment on the surface of carbon black is not very complete, which affects the transparency of the glue. That is to say, the hydroxyl silicone oil we add is not enough to treat the hydroxyl on the surface of white carbon black, indicating that there are some false hydroxyl groups in the hydroxyl silicone oil. In the process of vacuuming or heat treatment, part of the substance that is not involved in the reaction is removed. Also said understand carbon black and rubber molecules combined with incomplete or in combination with enough time, you can make adjustment from the process, the raw rubber mixing, and white carbon black first room temperature formula on using hydroxyl silicone oil and alkoxy silane used white carbon black surface hydroxyl, at about 8 hours 30 ~ 40 ℃ curing, vacuum processing again, This will improve the transparency of the glue.

At the same time, the key glue, in addition to the physical properties of the detection, but also to control the key force and fatigue life, we can use the instrument to test, control its indicators within a certain range.